Ball mill - Wikipedia

A ball mill is a type of grinder used to grind and blend materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering.It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from near the top of the shell.

Stone Crushing Plant,Stone Crushing Plant

HLM Vertical Roller Mill - Guilin HCM Machinery

HLM Vertical Grinding Mill The working principle of HLM Vertical Roller mill. The motor drives the reducer to rotate the millstone, the raw material are send into the center of the millstone from the air lock rotary feeder.